Harrow.



W; B. MITCHELL; HABROW.

APPLICATION EILED AUG. 12, 1910.

981,455. Patented Jan.'10,1911.

Attorneys ENTERED STATE% PATENT @FFTQE.

WICKLIFF B. MITCHELL, OF IBEDFORD, INDIANA.

HARBOW.

asresa.

To all whom it may concern:

Be it known that I, .VIoxLIrF B. Mirror:- ELL, a citizen of the UnitedStates, residing at Bedford, in the county of Lawrence and State ofIndiana, have invented a new and useful Harrow, of which the followingis a specification.

This invention has relation to a harrow structure and consists in thenovel construction and arrangement of its parts as hereinafter shown anddescribed.

The object of the invention is to provide a simple harrow structurecomprising a series of spaced beams held in fixed relation to each otherand provided with reversible blades which are held in vertical parallelplanes by securing devices located at the forward edges of the saidbeams. The said securing devices are so mounted and constructed thatthey may be readily withdrawn so that the blades may be easily andquickly reversed in their positions upon the beams and thus as theblades wear at their forward ends they may be turned so that their rearunworn ends may be forwardly disposed or vice versa.

In the accompanying drawings ;Figure 1 is a top plan view of the harrow.Fig. 2 is a side elevation of the same. Fig. 3 is a detail sectionalview of portions of the harrow showing one form of blade attachedthereto. Fig. 4 is a detail sectional view of portions of the harrowshowing another form of blade attached thereto. Fig. 5 is a detailsectional view of portions of the harrow showing still another form ofblade attached thereto.

The harrow consists of beams l which are secured together by bars 2 andwhich are held by the said bars in spaced relation as indicated in Figs.1 and 2 of the drawings. The beams 1 are of greater vertical thicknessat their rear portions than at their forward portions and the said beamsare provided at their forward edges with longitudinally disposed grooves3. The beams 1 are provided at their rear edges with kerfs or incisionst and at their forward edge portions with kerfs or incisions 5. Thekerfs or incisions 4: at the rear edges of the forward blade are in thesame vertical plane as the kerfs or incisions 5 of the next adjacentbeam 1 to the rear. The kerfs and incisions 4; and 5 of the adjacentbeams 1 are adapted to receive the forward and rear end portions,respectively, of blades (3. The blades 6 are Specification of LettersPatent.

provided in their upper portions with perforations 7 and rods 8 passthrough the per forations 7 of all of the blades 6 between two adjacentbeams 1 and the said rods 8 lie in the grooves 3 provided at the forwardedges of the said beams 1. The said rods 8 may be held againstlongitudinal movement by frictional contact with the said grooves 3 orother means may be provided for preventing the said rods from movingafter they have been positioned in the said grooves and passed throughthe perforations 7 in the blades 6. Each rod 8 is provided at one endwith an angularly disposed portion 9, whereby the said rod may bereadily with drawn in a direction longitudinal or lengthwise when it isdesired to remove the blades 6 from the kerfs for the purpose ofreversing the same in the manner above indicated.

It will be seen from Figs. 3, 4E and 5 of the drawings that the blades 6may be of any desired configuration and the blade 6 as illustrated inFig. 3 is provided with a pointed upper edge portion, while the blade asshown in Fig. 4: is cut away at its upper corner. The blade as shown inFig. 5 is in the form of an oblong and the kerfs or incisions at and 5in the rear and forward edges of the beams 1 are correspondingly formedto receive the blades of the various configurations. hen one or moreblades in a harrow structure has become worn at its forward or rearportion to such an extent as to become unserviceable, the rod 8 holdingthe said blade or blades may be withdrawn from the recess or recesses 3,and the said blade or blades may be reversed from their positionsbetween the adjacent beams 1, thus some one portion of the blade will beexposed or subjected to the work, while those portions of the bladewhich have become worn will be so positioned as to escape the soil asthe implement is drawn over the surface of the same.

Having described the invention what I claim as new and desire to secureby Letters Patent is A harrow comprising spaced beams, said beams havingat their rear edges incisions and at their forward edges incisions, theincisions at the rear edges of the forward beams being in the samevertical plane as the incisions at the forward edges of the next beam tothe rear and so on throughout the series of beams, said beams having attheir forward edges longitudinally disposed Patented Jan. 10, 1911.

Application filed August 12, 1910. Serial No. 576,814. 7 l,

grooves, blades inserted at their forward and In testimony that I claimthe foregoing rear end portlons 111 the 1ne1s1ons at the rear as my own,I have hereto afiixed 1ny s1gna and forward edges of ad acent beams, andture 1n the presence of two witnesses.

rods passing transversely through the blades \VICKLIFF B. MITCHELL.located between the same beams and lying lVitnesses: at theirintermediate portions in the grooves C. E. FRANKLIN,

at the forward edges of the said beams. VVALTER Gr. OWENS.

